February

February 2 – A second international conference on disarmament ends without results. It tries to limit the army sizes of the major powers, while Germany is entitled to 200,000; Germany leaves the conference because a plan postpones the limitations for 4 years.

The
Dow Jones Industrial Average rises from 53.84 to 62.10. The day's gain of 15.34%, achieved during the depths of the Great Depression, remains to date as the largest 1-day percentage gain for the index.

March 22 – President Franklin Roosevelt signs an amendment to the Volstead Act known as the
Cullen–Harrison Act, allowing the manufacture and sale of "3.2 beer" (3.2% alcohol by weight, approximately 4% alcohol by volume) and light wines.[3]

October 14 – Germany announces its withdrawal from the
League of Nations and the World Disarmament Conference, after the U.S., the U.K. and France deny its request to increase its defense armaments under the Versailles Treaty.